Telephone-bell



(No Model.)

R. D. HARRIGAN.

TELEPHONE 'BELL. No. 558,385. Patented Apr. 14, 1896.

WITNESSES: llVl/E/VTOR @m/w/W Haj/Mm ATTORNEYS.

UNITED STATES PATENT OFFICE.

RICHARD D. IIARRIGAN, OF LEADVILLE, COLORADO.

TELEPHONE-BELL.

SPECIFICATION forming part of Letters Patent No. 558,385, dated April14, 1896. Application filed November 5,1895. Serial No. 567,968. (Nomodel.)

will continue to be sounded after the main circuit shall have beenopened or cut out for instance, at the main oflice-and also to ring abell located at a distance from the telephone.

The invention consists in the construction and novel arrangement ofparts, as Will here:

inafter appear, and be particularly pointed out in the claims.

Reference is to be had to the accompanying drawing, forming a part ofthis specification, in which the figure is a diagrammatic view ofdevices embodying my invention.

Referring to the drawing, A designates a gong secured to thetelephone-casing A.

A is an electromagnet, and A is a bellhammer having an armature a on itspivoted shank portion, coacting with the electromagnet. A spring a,secured at one end to the hammer-shank and at the other end to thecasing, serves to draw the armature from the electromagnet.

The electromagnet is located in a main circuit comprising a wire 1,leading directly .to the electromagnet, a wire 2,leading to acontact-pin3, a portion 4 of the hammer-shank, which is designed to engage withsaid pin and serve as a circuit-closer, and a wire 5, leading from theportion 4 of the hammer-shank to the electromagnet.

B is a circuit-closer for closing an auxiliary circuit connected withthe telephone-casing and comprising wires '7 8, connected,respectively,with the main wires 1 2 and with contact-points b b, whichare here shown as mercury-cups; but I do not limit my invention to thisform of contact-points, as ordinary metal fingers or plates will answerthe purpose. In the auxiliary circuit is located a battery B.

The circuit-closerB is here shown as made in the form of an angle-leverpivoted at its angle to a bracket b and having a horizontal portionprovided with contact-fingers b b, adapted to engage with thecontact-points b b, and the closer has a vertically-disposed member b,which, when the closer is in open position, bears against a stop-pin bon the casing. This stop-pin b is so located as to allow the upperportion of the member 6 to lie in close proximity to the bell-hammer Awhen the same is in its normal position away from the gong. 'In lieu ofthe pin b or in connection therewith I may employ an adjustable stop forthe circuit-closer B. The adjustable stop is here shown as aset-screw bextended through a tapped hole in an arm extended from the bracket 12and impinging against the closer. In operation'when the circuit isclosed through the main circuit the electromagnet will draw the hammeragainst the bell, and upon the return movement of the hammer under theinfluence of the spring a the hammer will strike the member 12 of thecloser B and cause it to rock on its pivot and bring the fingers b 11into engagement with the contact-points b I), thus closing the auxiliarycircuit comprising the battery B. \Vhen in this condition,and after themain circuit shall have been opened at the central office, the gong willbe continuously sounded, or until the parts are returned to their normalposition by disengaging the fingers b b from the mercury or similarcontact-points b b. I also contemplate the closing of a circuit by meansof the closer B, whereby a bell located at a distance from the telephonemay be sounded, and to this end I show a bell B which may be located atany desired point, and this bell is contained in a circuit comprising abattery B and wires 9 10, which are in engagement with thecontact-points b b. It is obvious that this last-described circuit maybe omitted or it may be employed alone, the main object being to set abell in operation after the first ringing of the telephone-bell. For thepurpose of the claims this last-described circuit may also be termed anauxiliary circuit.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a telephone, a gong, a hammer therecuit of anauxiliary circuit, Wires having connection with the main circuit-Wires,a battery in the auxiliary circuit, contact points, a closer for saidauxiliary circuit comprising an angle-1ever having a horizontal portionprovided with contact-fingers to engage the contact-points, and avertically-disposed member adapted to be engaged by the hammer tooperate said circuit-closer and a stop for said closer, substantially asspecified.

RICHARD D. IIARRIGAN. lVitnesses:

WILLIAM B. PECK, CHARLES E. HOTALING.

